At least one forum member is using these red LED decorative strands, usually sold around this time of year, and using them as supplemental darkroom lighting.
I use them and have helped others buy and use them too.
As long as they are up near the ceiling, mine pass the full Kodak Safelight Test with all the papers I use.
These are the ones I bought and tested for friends in 2017: https://www.amazon.com/gp/buyagain/...HBsaWNpdENhbmRpZGF0ZXMiOiJCMDBE
SkQ3OElNIn0=
You need to test, because there are no guarantees they haven't changed since then.
I used LED string lights for many years. No fogging. I prefer more directed and shadowy safelight and switched to little red LED bulbs in a reflector housing.